media: radio-raremono: remove redundant initialization of freq

Variable freq is initialized to f->frequency however this value
is never read and freq is later updated; hence the initialization
is redundant and can be removed.

Cleans up clang warning:
drivers/media/radio/radio-raremono.c:257:6: warning: Value stored
to 'freq' during its initialization is never read
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/radio/radio-raremono.c

@@ -254,7 +254,7 @@ static int vidioc_s_frequency(struct file *file, void *priv,
 				const struct v4l2_frequency *f)
 {
 	struct raremono_device *radio = video_drvdata(file);
-	u32 freq = f->frequency;
+	u32 freq;
 	unsigned band;
 
 	if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)